A control device of a vehicle enables an engine to be operated at an operating point with a good fuel consumption efficiency, to perform power generation, without causing a sense of incongruity about noise or vibrations to a driver. With the control device, the engine is operated so that generated power of a generator increases in response to electric power required of the vehicle. Thus, the engine can be operated at an operating point with a satisfactory fuel consumption efficiency. When in an acceleration state, the engine is operated so that the increase amount of generated power is set to be larger than when in a deceleration state. When in the deceleration state, the engine is operated so that an increase in generated power is suppressed and an increase in noise is curbed.

The vehicle control system includes an engine, a battery, a motor generator that generates driving power and generates electric power to charge the battery, a power conversion device that generates driving power to the motor generator and charges the battery, and a control device that controls the engine and the power conversion device. The control device controls the engine and the power conversion device and the remaining capacity of the battery is equal to a target value when the remaining capacity of the battery is equal to or less than the lower threshold. The control device reduces the target value of the remaining value of the battery as compared with a case where temperature of the battery is equal to or more than a threshold value when the temperature of the battery is less than the threshold value.

A hybrid wheel loader includes a control device (200) that estimates output power of an engine (1) and an electricity storage device (11) when the hybrid wheel loader is inferred on the basis of output values of detectors (62, 63) to be traveling towards an object of excavation in order to perform an excavating work, and then, if the output power is less than target power considered necessary for the excavating work, accelerates the engine (1) to a target revolution speed while increasing the electric power supplied from the electricity storage device to a traveling motor (9). Accordingly, power necessary for excavation can be drawn from the engine even when the engine revolution speed is low and there is a fear of power deficiency occurring at the time of the excavating work.

Methods of controlling a prime mover and a continuously variable transmission (CVT) are described. The CVT has a group of spherical power adjusters. Each power adjuster has a tiltable axis of rotation. The methods may include optimizing a vehicle having a drive motor and a continuously variable transmission. The CVT has a plurality of spherical power adjusters, each power adjuster having a tiltable axis of rotation. The methods may include optimizing a drive system having a prime mover and a continuously variable transmission.

To efficiently control charging and regenerative control for a secondary battery. A charge control device, including: a calculation unit (voltage sensor (11), current sensor (12), and control unit (10)) that calculates a state of charge of the secondary battery; a detection unit (vehicle state detection unit (20)) that detects a traveling state of the vehicle; and a control unit (control unit (10)) that, when it is detected that the vehicle is decelerating, sets a voltage generated by an alternator higher than the terminal voltage of the secondary battery in order to regeneratively charge the secondary battery, that, when it is detected that that the vehicle is not decelerating, sets the voltage generated by the alternator lower than the terminal voltage of the secondary battery when a state of charge is greater than a prescribed second threshold value, and that sets the voltage generated by the alternator higher than the terminal voltage of the secondary battery when the state of charge is less than a prescribed first threshold value. The second threshold value is greater than the first threshold value, and the first threshold value and the second threshold value are set within a low SOC region.

Disclosed is a method for control of a vehicle with a drive system comprising an output shaft in a combustion engine and a planetary gear with a first and a second electrical machine connected via their rotors to the components in the planetary gear, a supply of electrical power to electrical auxiliary units and/or loads present in the vehicle is carried out, by way of the combustion engine being kept running with its output shaft connected with the second electrical machine's rotor, and the electrical auxiliary units and/or loads being supplied with electrical power via the first electrical machine and/or the second electrical machine.

A hybrid vehicle includes a control unit that performs control such that the motoring of an engine is carried out at a higher rotational speed when a required braking force is large than when the required braking force is small, from the start of charge of a battery to the start of rapid decrease in a charging power of the battery, in the case where predetermined control is performed to control a first motor and a second motor such that the battery is charged within a range of a permissible charging power through regenerative driving of the second motor and the motoring of the engine by the first motor with fuel injection stopped and that the required braking force at a braking request is applied to the vehicle, in response to the making of the braking request during the performance of cruise control or variable speed limiter control.

A hybrid vehicle includes an internal combustion engine, a first rotating electrical machine, a second rotating electrical machine, a clutch, an electrical storage device, and an electronic control unit. The electronic control unit is configured to control the first rotating electrical machine, the second rotating electrical machine, the clutch, and the internal combustion engine, such that the hybrid vehicle runs while making a changeover among a plurality of running modes. The plurality of the running modes includes series hybrid running and parallel hybrid running. The electronic control unit is configured to set a range of state of charge of the electrical storage device such that the range of state of charge that is set during the parallel hybrid running includes a region of state of charge that is higher than the range of state of charge that is set during the series hybrid running.

The present invention controls torque of a hybrid vehicle that calculates power and torque of each motor when the hybrid vehicle provided with two motors operates at a transient state are used. More specifically, target power of a battery is determined. Then calculations are performed to determine target torque of the first motor, target torque of the second motor, target torque of an engine, and target speed of the engine at a steady state. The torque of the first motor at a transient state is calculated from the target torque of the second motor at the steady state and speeds of the first and second motors. Finally, torque of the second motor at the transient state is calculated from the torque of the first motor at the transient state and the speeds of the first and second motors.

A vehicle having a traction battery with at least one cell includes a controller coupled to the traction battery and programmed to modify traction battery current in response to a difference between a lithium plating parameter target value and a lithium plating parameter actual value to reduce the difference. The lithium plating parameter or indicator may be based on a differential open circuit voltage of a battery cell, or a ratio of differential voltage of the at least one cell as a function of time to cell charging rate of the at least one cell.